EP 3372556 A1 20180912 - A PLANT FOR THE PRODUCTION OF NITRIC ACID, A RELATED PROCESS AND METHOD OF REVAMPING
Title (en)
A PLANT FOR THE PRODUCTION OF NITRIC ACID, A RELATED PROCESS AND METHOD OF REVAMPING
Title (de)
ANLAGE ZUR HERSTELLUNG VON SALPETERSÄURE, ZUGEHÖRIGES VERFAHREN UND VERFAHREN ZUR UMARBEITUNG
Title (fr)
INSTALLATION POUR LA PRODUCTION D'ACIDE NITRIQUE, PROCÉDÉ ASSOCIÉ ET PROCÉDÉ DE MODERNISATION
Publication
Application
Priority
EP 17159734 A 20170307
Abstract (en)
A dual-pressure plant for the synthesis of nitric acid comprising: a reactor (4) providing a gaseous effluent (15) containing nitrogen oxides; an absorption tower (6) nitrogen oxides react with water providing raw nitric acid and, said absorption tower operating at a pressure greater than the pressure of the reactor; a compressor (5) elevating the pressure of the reactor effluent (15) to the absorption pressure; said plant also comprising a first bleacher (37) and a second bleacher (7), said first bleacher (37) stripping with air (39) nitrogen oxides from the output stream (27) of the absorption tower (6) providing a partially stripped nitric acid stream (40) and a nitrogen oxides-loaded air stream (41), the former being fed to the second bleacher (7) and the latter being recycled to the delivery-side of said compressor (5).
IPC 8 full level
C01B 21/26 (2006.01); B01D 53/02 (2006.01); B01D 53/56 (2006.01); C01B 21/28 (2006.01); C01B 21/46 (2006.01)
CPC (source: EP RU US)
B01D 53/02 (2013.01 - EP RU); B01D 53/1493 (2013.01 - RU US); B01D 53/56 (2013.01 - RU US); B01D 53/78 (2013.01 - RU US); C01B 21/26 (2013.01 - EP RU); C01B 21/28 (2013.01 - EP RU US); C01B 21/46 (2013.01 - EP RU US); B01D 53/56 (2013.01 - EP); B01D 2252/103 (2013.01 - US); B01J 2219/00024 (2013.01 - US)
Citation (search report)
- [X] US 3881004 A 19750429 - KELLY HAROLD D, et al
- [XA] DE 10011335 A1 20010920 - KRUPP UHDE GMBH [DE]
- [A] US 6264910 B1 20010724 - MAURER RAINER [DE], et al
- [A] US 2016039674 A1 20160211 - SCHWEFER MEINHARD [DE], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3372556 A1 20180912; AU 2018231281 A1 20190822; AU 2018231281 B2 20240215; BR 112019018373 A2 20200407; CA 3051636 A1 20180913; CN 110382412 A 20191025; EP 3592698 A1 20200115; EP 3592698 B1 20210728; RU 2019130677 A 20210407; RU 2019130677 A3 20210407; RU 2749600 C2 20210615; UA 124041 C2 20210707; US 11292719 B2 20220405; US 12006211 B2 20240611; US 2020071167 A1 20200305; US 2022219985 A1 20220714; US 2022227628 A1 20220721; WO 2018162150 A1 20180913
DOCDB simple family (application)
EP 17159734 A 20170307; AU 2018231281 A 20180201; BR 112019018373 A 20180201; CA 3051636 A 20180201; CN 201880016052 A 20180201; EP 18702499 A 20180201; EP 2018052469 W 20180201; RU 2019130677 A 20180201; UA A201910127 A 20180201; US 201816491965 A 20180201; US 202217712551 A 20220404; US 202217713091 A 20220404